More water releases may lift River Murray inflows into SA

River Murray inflows into South Australia may increase further this week, if the Murray-Darling Basin Authority releases more water from its storages in northern Victoria.

The flow into the state nearly doubled to 15,000 megalitres a day last week and is expected to remain steady this week.

However, the Department of Environment, Water and Natural Resources says the flows could rise if the authority decides to release more water from the Hume and Dartmouth dams.

The department's Jarrod Eaton says it will depend on upstream conditions.

"The Murray-Darling Basin Authority, they'll set operational targets about looking at the storage volumes and how they manage the inflows, so those pre-releases are very much driven by the inflows upstream of Hume reservoir," he said.

"So if the inflows start to drop off they re-look at the pre-releases and work out the volume which they'll go and release."

Flows in the River Murray last month were about two-thirds of the monthly average.

The River Murray system inflow for July was 820 gigalitres compared to the long-term monthly average of 1,240 gigalitres.

The department says it is the result of relatively dry conditions across the basin system at the start of winter.

Mr Eaton says water from more recent rainfall events is only just starting to filter through.

"Often it'll take three to four weeks for some of those higher flows to start arriving at the South Australian border and that's the reason why in mid-August we're already up around 15,000 megalitres a day and that compares to the normal August entitlement flow of about 4,000, so we're seeing the results of some of that recent rainfall," he said.